Spark-plug wrench



Aug. 28, 1923.

C. BUCK SPARK PLUG WRENCH Filed Sept. 14 1921 //v l/E/V 70E. warzes .Bwc%.

Patented Aug. 28, 1923 tear CHARLES BUCK, OF GERMANTOWN, PENNSYLVANIA.

SPARK-PLUG WRENCH.

Application filed. September 14, 1921. Serial No. 500,701.

To all whom it may concern to internal combustion engines as used in motor-vehicles, motor-boats, aeroplanes, and otherwise and has more especial relation to a wrench with which to remove certain bolts to disengage the head from the cylinder and with which to remove certain of the sparkplugs. The

leading object of the present invention is to provide a wrench of simple and efficient structureyof comparatively inexpensive design, andof compact form which may be employed for removing the nuts 'of bolts of the cylinder-head and whichmay be employed for removin the spark-plugs.

The invention consists of the improve ments hereinafter described and finally claimed.

The nature, characteristic features, and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, and in which Fig. 1 IS a front elevational view of the tool, and 4 Fig. 2 is an edge view thereof.

For the purpose of illustrating my invention I have shown in the accompanying drawings one iform thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

In the drawings the tool is shown as being of integral structure and generally stated comprises a stem rovided at one end with a substantially ring-like handle equipped with oppositely, disposed nut-engaging portions and provided at its other end with a spark-plug socket engagin whole forming a substantialcil y vice. The stem is designate portion the 'T-shaped de- 10 and terminates at one end in a handle 11 which is disposed at right angles to said stem and is of the general configuration of an elongated eye. The opposed ends of the handle are H provided with nut-engaging or wrench-parts 6 v 12 and 13, of which the one designated 12 is smaller than other and is adapted to fit the nuts of a cylinder-head, and of which the one designated 13 is adapted to engage the nuts of spark-plugs. In practice several -sizesof tools are made to accommodate dif:

ferent types of engines. The wrench-parts are disposed in the same plane upon an axis extended through the handle at right angles to an axis extended through the stem. The 7 wrench-parts extend beyond a line circumscribing the handle ends. The ring-like portion of the handle enables the operator to obtain a good grip when using the tool as a cylinder-head lifter. The opposite end of the stem terminates in .an enlarged cylindrical portion 14 exteriorly screw-threaded for engaging a socket from which a spark-plug has been removed. In practice when a oyl inder-head requires moving the nuts of bolts securing the head to the engine block are loosened by wrench-parts 12 of the tool and removed, and at least two spark-plugs removed after being loosened by wrench-parts 13. Two ofthese tools are then employed for removing the cylinder-head, a part 14 of each being fitted to a socket previously occupied by a spark-plu The operator grasps a tool handle in eacii hand and thus may readily remove a head. As the cylinderheads are frequently hot this affords an efficient and expeditious manner of removal.

What I claim is:

A spark-plug wrench having a handle comprised of a single elongated cylindrical stem whichextends throughout the major portion of its extent upon straight lines to provide a smoothhand-grip, said stem havmy name.

CHARLIE BUCK. 

